Sheet material



FIG. 1 is a plan view of a sheet material according to my new design;and,

FIG. 2 is a front elevation view, thereof.

The broken lines surrounding FIG. 1 and illustrating the area at thebottom of the article shown in FIG. 2 depict environmental subjectmatter that forms no part of the claimed design.

CLAIM I claim the ornamental design for a sheet material, as shown anddescribed.